White dwarf-red dwarf binaries in the SDSS (Augusteijn+, 2008)

Details White dwarf-red dwarf binaries in the SDSS (Augusteijn+, 2008) White dwarf-red dwarf binaries in the SDSS (Augusteijn+, 2008)

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ycat..34860843a&link_type=abstract

VizieR On-line Data Catalog: J/A+A/486/843. Originally published in: 2008A&A...486..843A

Physics

Binaries: Spectroscopic, Photometry: Sdss

Scientific paper

To separate single from binary sources and to cut spurious sources out, we defined selection criteria based on a combination of the (u-g), (g-r), and (r-i) colours. Here we list the final sample of 651 binary candidates. We found that for r magnitudes brighter than ~16.5 the proper motion catalogue is heavily contaminated with sources that have incorrect colours due to the r magnitudes being relatively too faint, most likely due to saturation effects. The level of contamination can be reduced by either excluding sources brighter than r=16.5mag or by excluding sources bluer than (u-g)=-0.5 or (g-r)=-0.6 and brighter than r=16.0mag.
(1 data file).

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